<
IA1261: A
>
FINAL
ST
AGE OF INST
ALLA
TION
Insulation And Maintenance Of Pipe Connection
1
●
The connected terminals should be completely sealed with
heat insulator and then tied up with rubber strap.
●
Please tie the pipe and power line together with vinyl tape
as shown in the
fi
gure showing the installation of Indoor and
Outdoor units. Then
fi
x their position with holders.
●
To enchance the heat insulation and to prevent water
condensation, please cover the outdoor part of the drain hose
and pipe with insulation pipe.
●
Completely seal any gap with putty.
Installation Of Remote Controller
2
●
The remote controller can be placed in its holder which is
fi
xed on wall or beam.
●
To operate the remote controller at its holder, please ensure
that the unit can receive signal transmitted from the controller
at the place where the holder is to be
fi
xed. The unit will beep
when signal is received from the remote controller. The signal
transmission is weaken by the
fl
uorescent light. Therefore,
during the installation of the remote control holder, please
switch on the light, even during day time, to determine the
mounting location of the holder.
Pump Down Method When Reuse
Existing Piping (R22 Model) for
R410A Model
Proper Pump Down Method
●
Compressor oil of R22 model is insoluble in compressor
oil of R410A model. The mixing of compressor oil may
cause damage of compressor.
Possibility of Mixing
●
Reuse of piping of R22 model is dangerous because
of its compressor oil.
●
When reuse piping of R22 model, pump down must be
carried out properly to ensure compressor oil which is
remained inside piping is collected away.
To Reuse Old Piping
●
Piping of R22 model can be reused only when air-
conditioner is properly pumped down.
●
The purpose of pump down is to collect back the
compressor oil (which is mixed with refrigerant and
circulating inside refrigeration cycle) properly into the
outdoor unit of air conditioner.
1
Operate air conditioner
at cooling mode for
10~15 minutes
2
After 10~15 minutes of
pre operation, close 2s
valve. After 3 minutes,
close 3s valve.
Power Source And Operation Test
3
Power Source
CAUTION
!
●
Please use a new socket. Accident may occur due to the
use of old socket because of poor contact.
●
Please plug in and then remove the plug for 2 – 3 times.
This is to ensure that the plug is completely plugged into
the socket.
●
Keep additional length for the power cord and do not
render the plug under external force as this may cause
poor contact.
●
Do not
fi
x the power cord with U-shape nail.
Operation Test
●
Please ensure that the air conditioner is in normal operating
condition during the operation test.
●
Explain to your customer the proper operation procedures
as described in the user’s manual.
The controller
should be insert
from top into
bottom side of the
holder as shown in
fi
gure beside.
OUTDOOR UNIT
●
Please mount the Outdoor unit on stable ground to prevent vibration
and increase of noise level.
●
Decide the location for piping after sorting out the different types of
pipe available.
●
Open the side plate by unscrewing the screws as shown below.
Gas Leakage Inspection
Please use gas leakage detector to check if leakage
occurs at the connection of Flare nut as shown on
the right.
If gas leakage occurs, further tighten the connection
to stop leakage. (Use the detector provided for
R410A)
Preparation of Pipe
●
Use a pipe cutter to cut the copper pipe.
●
Jagged edge will cause leakage.
●
Point the side to be trimmed downwards during trimming to prevent copper
chips from entering the pipe.
●
Before
fl
aring, please put on the
fl
are nut.
Pipe Connection
2
INST
ALLA
TION OF REFRIGERA
TING PIPES
AND
AIR REMOV
AL
●
Recommend to use
R410A
fl
aring tool.
In case of removing
fl
are nut of an Indoor unit,
fi
rst remove a nut
of small diameter side, or a seal cap of big diameter side will
fl
y
out. Prevent water from entering into the piping when working.
1
Outer
dia.of pipe
6.35 (1/4")
9.52 (3/8")
12.7 (1/2")
6.35 (1/4")
9.52 (3/8")
12.7 (1/2")
Valve
head cap
Torque N·m
(kgf
·
cm)
13.7 – 18.6 (140 – 190)
34.3 – 44.1 (350 – 450)
44.1 – 53.9 (450 – 550)
19.6 – 24.5 (200 ~ 250)
19.6 – 24.5 (200 ~ 250)
29.4 – 34.3 (300 – 350)
12.3 – 15.7 (125 ~ 160)
Small dia. side
Large dia. side
Valve core cap
Small dia. side
Large dia. side
CAUTION
CAUTION
!
!
Outer
Diameter (mm)
6.35 (1/4)
9.52 (3/8)
12.70 (1/2)
15.88 (5/8)
1.0~1.5
1.0~1.5
1.0~1.5
1.0~1.5
Clutch type
A (mm)
1.5~2.0
1.5~2.0
1.5~2.5
1.5~2.5
Wing nut type
Thickness
(mm)
0.8
0.8
0.8
1.0
0.0
~
0.5
0.0
~
0.5
0.0
~
0.5
0.0
~
0.5
Flare tool for R410A
Clutch type
Conventional
fl
are tool
●
The naked part of the wire core should be 10 mm and
fi
x it to the terminal tightly. Then
try to pull the individual wire to check if the contact is tight. Improper insertion may burn
the terminal.
●
Be sure to use only power cables approved from the authorities in your country. For
example in Germany: Cable type: NYM 3x1.5mm
2
, (fuse = 16A time delay)
●
Please refer to the installation manual for wire connection to the terminals of the units.
The cabling must meet the standards of electrical installation.
●
There is a AC voltage of 220V between the L and N terminals. Therefore, before servicing,
be sure to remove the plug from the AC outlet or switch off the main switch.
●
Do not make any connection in the middle of the connecting cable. It may cause the
wire over heated, emit smoke and
fi
re.
●
Investigate the power supply capacity and other electrical conditions at the installation
location.
Depending on the model of room air conditioner to be installed, request the customer
to make arrangements for the necessary electrical work etc.
The electrical work includes the wiring work up the outdoor. In localities where
electrical conditions are poor, use of a voltage regulation is recommended.
●
Install outlet for the room air conditioner within the reaching range of the line cord.
●
THIS APPLIANCE MUST BE EARTHED.
Procedures of Wiring
WARNING
●
If you cannot attach the side plate due to the connecting cord, please
press the connecting cord in direction to the front panel to
fi
x it.
●
Be sure that the hooks of the side plate is
fi
xed in certainly. Otherwise
water leakage may occur and this causes short circuit or faults.
Wiring of The Outdoor Unit
●
Please remove the side plate for wire connection.
!
WARNING
!
CONNECTION OF POWER CORD
WARNING
Power supply shall be connected at the rated voltage, otherwise the unit will be
broken or could not reach the speci
fi
ed capacity.
Detail of cutting the connecting cord
When removing the connecting wires for the Indoor unit, please remove the low cover panel in
front of the unit.
Wiring Of The Indoor Unit
●
For wire connection of the Indoor unit, you need to open or remove front panel
and electrical cover.
Method to remove front panel
●
Please refer to Instruction Manual – “Removing the Front Panel” under “Cleaning
of Front Panel”.
Precautions When Performing Wiring of the
Outdoor Unit
Reuse of piping R-22 model only apply if previous
model is Hitachi and proper pump down method is used.
CAUTION
!
3
Take out air conditioner unit.
4
Install New Refrigerant
air conditioner
Most Important Process
Purpose: To make the
oil & refrigerant mix
together. They are in
separated condition when
air conditioner is
stopped.
Mixed
refrigerant
& oil will be
collected into
outdoor unit.
It is advisable to
fl
ush
the piping with R410A to
avoid any contamination
remain before new
installation.
!
Removal Of Air From The Pipe And Gas Leakage Inspection
3
Procedures of using Vacuum Pump for Air Removal
AIR REMOV
AL
When the meter reaches - 101KPa (-76cmHg)
during pumping, fully tighten the shuttle.
Lo
Hi
Meter showing pressure
Closed
Manifold valve
Vacuum
pump
Valve
Charge hose
Valve
When pumping starts, slightly loosen the
fl
are nut to check of air sucked in. Then
tighten the
fl
are nut.
As shown in right
fi
gure, remove the cap of
valve core. Then, connect the charge hose.
Remove the cap of valve head. Connect the
vacuum pump adapter to the vacuum pump
and connect the charge hose to the adapter.
Fully tighten the “Hi” knob of the manifold
valve and completely unscrew the “Lo” knob.
Run the vacuum pump for about 10~15
minutes, then completely tighten the “Lo” knob
and switch off the vacuum pump.
2
Completely unscrew the spindle of the
service valve (at 2 places) in anti-clockwise
direction to allow the
fl
ow of refrigerant (using
Hexagonal Wrench key).
Re-cap the service valve and tighten using
wrench. Check the cap’s periphery if there is
any gas leakage. The task is then completed.
Remove the charge hose and tighten the cap
of valve core. Check the cap’s periphery if
there is any gas leakage.
4
5
1
3
Vacuum
pump
adapter
Method to remove electrical cover
●
Remove the screw and electrical cover.
●
Insert the connecting cord (C, D) from the back of unit.
●
Fixed the wire to terminal wires
fi
rmly as shown in
fi
gure at right side.
Electrical cover
Connecting cord
Screw
Circuit Breaker
13A
IMPORTANT
!
CAUTION
Note:
●
Outdoor supply cords shall not be lighter than
polychloroprene sheathed
fl
exible cord, 60245 IEC 57.
WARNING:
Do not remove or cut the Protective Sheet
NOTE:
Before performing the connection of
the connecting cord to the outdoor unit,
check whether the Protective Sheet is
equipped or not.
If equipped, connection of the connecting
cord shall be performed as below.
If not, perform the connection of the
connecting cord as in “Procedures of
Wiring”.
Pull out the Protective Sheet as
shown without removing it from
the outdoor unit.
Insert the connecting cord
through the hole of the Protective
Sheet.
Connect the connecting cord as
shown in “Procedures in Wiring”.
Place the Protective Sheet back
to its original position as shown.
Protective Sheet
Pull out the
Protective Sheet
Place back
the Protective
Sheet
Connect the
earth cord
After remove the
screw and band,
put the connecting
cords and
fi
x the
band with screw.
●
How to check pipe bending.
– Compare bended pipe with the picture below.
– If bended pipe is not good enough, cut bended area
and bend it again.
a all areas are smooth, no notching area
b no scratch or mark inside
c all have the same length
d phase of bending is too long
e slanting
f there are scratches around bending area
g crack
h different
length
i sample of bending pipe cannot be used
INS RAS-DX10CET-SX10CET (EN2) 1
INS RAS-DX10CET-SX10CET (EN2) 1
4/27/15 10:56 AM
4/27/15 10:56 AM
